With Ringio people can leave a voicemail either for a single person or a whole department. Either way you will be able to listen to your voicemails through the desktop application.
1- Sign in and look at the left column (call history) of the application. If you would like to know what each symbol means just click here.
2- Look for a call with a cassette recorder icon.
3- Click on the icon to listen to the message
Also, if your administrator has set it up, you will receive an email every time somebody leaves a voicemail with a link to it. Just click on the link and the message will be played in your browser.